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Author or maintainer of the following packages:

foreign

Functions for reading and writing data stored by some versions of Epi Info, Minitab, S, SAS, SPSS, S...
nlme

Fit and compare Gaussian linear and nonlinear mixed-effects models.
RMySQL

Implements 'DBI' Interface to 'MySQL' and 'MariaDB' Databases.
sem

Functions for fitting general linear structural equation models (with observed and latent variables)...

Impact Percentile

100

Number of Packages

4

Package Downloads

414,586

Citations

368